Duet (FireWire) vs. Duet 2 (USB)

Features	Duet	Duet 2
Computer Connectivity	FireWire 400	USB 2.0 High Speed
Sound Quality	1st Generation	2nd Generation
Roundtrip Latency performance	32 buffer @ 96kHz = 4.6 ms64 buffer @ 44.1kHz = 7.23 ms	32 buffer @ 96kHz = 3.6 ms64 buffer @ 44.1kHz = 5.8 ms
Power	FireWire Bus Power	USB Bus Power (DC power optional)
Sample Rate	24-bit/44.1-96kHz	24-bit/44.1-192kHz
Input Channels	2	2
Output Channels	2	4 (Stereo headphone out & L/R speaker outs)
Speaker Outputs	Unbalanced	Balanced
Independent Headphone Out	N/A
Microphone Preamps	2	2
Microphone Preamp Gain	up to 75dB	up to 75dB
Line Level Input
OLED Display	N/A
Touchpads	N/A
Metering	LED Segments	Full Color OLED
Breakout Cable Design	2 XLR In, 2 1/4" In, 2 1/4" Out	2 Combi In, 2 1/4" Out
Maestro Version	Maestro 1	Maestro 2
Phantom Power
Phase Invert
Soft Limit	N/A
Group Inputs
Mute Outputs
Sum to Mono	N/A
Dim Outputs	N/A
Toggle Headphone Source	N/A
Core Audio Compatible